0.3.1 fix

git-svn-id: https://plugins.svn.wordpress.org/archives-calendar-widget/trunk@819139 b8457f37-d9ea-0310-8a92-e5e31aec5664
update 0.3.1

git-svn-id: https://plugins.svn.wordpress.org/archives-calendar-widget/trunk@819140 b8457f37-d9ea-0310-8a92-e5e31aec5664